Must know before buying a welding machine….. Valuable guidelines provided by Aadarsh welding machine.

Three technologies (MOSFET, IGBT and SiC) used in welding machines.

The differences are as follows as per the latest information as of December 2025:

1. MOSFET Welding Machine

(Metal-Oxide-Semiconductor)

Uses: This technology is generally used to make machines lightweight and portable.
Advantages: Its switching speed is very high, due to which the welding arc remains very stable. It is best for small and precision work.
Disadvantages: These machines are prone to overheating. Therefore, this machine should not be used in heavy industries where welding has to be done for a long time.

2. IGBT Welding Machine

(Insulated-Gate Bipolar Transistor)

Uses: This is currently the most widely used technology in the industry. It is best for heavy industries and factories.
Advantages: It can easily withstand high voltage and high current. Compared to MOSFET, it is more robust and can provide continuous work for a long time.
Disadvantages: It has a slightly lower switching speed than MOSFET, but it is more reliable for heavy work.

3. SiC Welding Machine

(Silicon Carbide)

Uses: This is the most advanced and premium technology of 2025. Which is the fastest, smallest, lightest, yet strongest and best for best efficiency.
Advantages: According to Mouser Electronics, a global company from California founded in 1964 and IEEE University Research, SiC machines consume 30% to 45% less electricity than IGBT and can work stably even at high temperatures like 200°C. They are very small in size and extremely light in weight.
Disadvantages: Since SiC is the most advanced, best and premium technology, the price of these machines is currently higher than MOSFET and IGBT, which is understandable.

MOSFET: If you have to do small welding jobs occasionally or have a low budget, a MOSFET machine can be an option.
IGBT: If you have to do professional welding work, operate the machine all day and need strength, IGBT is a good option.
SiC: If you want to operate the machine all day with high efficiency, small size and excellent performance, a welding machine with SiC technology is a great option.